mRNA

mRNA, or messenger RNA, is a type of RNA that serves as a temporary copy of the genetic information encoded in DNA. It plays a critical role in the process of translating genetic information into proteins. In eukaryotic cells, mRNA is synthesized in the nucleus during transcription, where it carries the genetic instructions from the DNA to the ribosome, the site of protein synthesis. The sequence of nucleotides in the mRNA is translated into a specific sequence of amino acids, forming a polypeptide chain that folds into a functional protein. mRNA undergoes several processing steps, including splicing, capping, and polyadenylation, before it is transported to the cytoplasm for translation. The stability and translation efficiency of mRNA can influence how much protein is produced in a cell, making it a vital component of gene expression regulation.